Change for 0.229, Mame no longer carries the suffix 64 on its executable, so either rename the exe to add the suffix back, or update your mame emulators for LB & RL to the non-suffix version. This change was introduced by the mame devs this month.
NOTE: This does NOT interfere with the Leader boards at all.
**This removes the nag screen that informs you if a rom doesn't work correctly, or if at all, if you use this no nag, then please do NOT go to the mame support site with issues with games, please only use if you understand that there will be no help from anyone at mamedev as you are using a modified version of mame.
mame.exe - Normal Mame with Nags removed. For Version 0.229
You are required to download the full 0.229 official pack and install it, then just overwrite the exe with the replacement, this covers any changes the mame devs may have made to the support files.
After you have done this, make sure you copy the folders artwork, ctrlr, cheat, hlsl, ini, folders and the ini files from the root of your original mame folder, and move/copy them to the new install.
make sure in the mame.ini file you have the following set.